Truck



Dec. 28, 1937. c, EASTBURG Q 2,103,979

TRUCK Filed Feb. 14, 1956 2 Sheets Sheet l 1N VENT'O e:

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Patented Dec.'28, 1937 UNITED STATES PATENT OFFICE The Timken Roller Bearing Company, Canton, Ohio, a corporation of Ohio AppiicationIFebr-uar'y 14, 193d, Serial. No. 63,854

7 Claims. (61. 105--79) This invention relates to trucks, particularly that extends beyond the end of said housing and pedestal trucks of the kind that are used with has a wheel J press-fitted on or otherwise rigidly locomotive and passenger cars and are equipped secured to said axle outside of the truck side with roller bearings axle constructions. The in frame A.

vention has forits principal objects to relieve the The pedestal box G preferably comprises two axle of the weight of the truck and the side thrust vertically separable sections, an upper section 2, thereof, to permit inspection of the roller bearwhich snugly fits the upper half of the axle housings without removing the wheels from: the axle, I ing H andincludes the frame shoe engaging sides to provide for adjusting the bearings,- to provide of said box, and a lower section 3 that is slidable for correctly positioning the crank pin axially of vertically between the lower end portions of the 0 the hole provided therefor in the wheel, to proframe shoe engaging portions of said upper secvide for simplicity and cheapness of construction tion and has its upper surface curved to fit the and compactness of design, to devise a process lower half of said axle housing. The lower side of correcting any distortion of the bearing seat corners of the lower pedestal box section 3 are 7 in the wheel due to press-fitting the wheel on provided with upstanding flanges 4 that overlap 15 the axle and the crank pin in the wheel. The depending flanges 5 at'the corresponding corners invention consists in the roller bearing truck axle of the upper pedestal box section 2 and serve to construction and in the operations and combinaprevent spreading of the lower ends of the frame tions hereinafter described and claimed. In the shoe engaging sides thereof.

accompanying drawings, which form part of this Thetwo sections of the pedestal box G are specification and wherein like symbols refer to drawn together about the axle housing H by like parts wherever they occur, means of wedges 6 that work 'in cooperating Fig. 1 is a vertical section through the pedestal grooves I and 8 provided therefor in the conof a locomotive truck and the cooperating end tacting vertical faces of the respective sections,

5 portion of a roller bearing driving axle construceach wedge engaging the bottom of the groove 1 5 tion embodying my invention, I in the upper section 2 and the top of the groove 8 Fig. 2 is a similar fragmentary'section showin the lower section 3, whereby said wedge, when ing the bearing and the parts adjacent thereto on forced longitudinally of the cooperating grooves an enlarged scale, in the direction of its small end, operates'to draw 0 Fig. 3 is a vertical section on the line 3-3 in the two sections together about the axle housing- Fig. 1, the truck side frame being shown in side 1 The upper section 2 of the drive box has a pair of elevation; and i upstanding lugs or ears 9 thereon located one on Fig. '4 is a fragmentary horizontal section on each side of the truck side frame A and provided the line 4--4 in Fig. 1. above said frame with axially alined horizontal In the accompanying drawings, my invention apertures adapted to receive and support the 35 is shown in connection with a locomotive truck ends of a pivot pin ill for a lever 10a that has a having a side frame A provided with a pedestal link connection lllb with a spring Inc, said lever, B, a removable pedestal tie bar or strap C for link and spring forming part of the mechanism closing-the jaw of the pedestal, channel-shaped for equalizing the weight on the truck axles. 40 frame shoes D that straddle the legs of said ped- Interposed between the wheel and the axle 40 estal, an adjusting wedge E interposed between housing is an antifriction-bearing, preferably a one of the pedestal legs and the frame shoe theretaper roller bearing comprising a cone or inner for, and an adjusting bolt F for said wedge raceway member H mounted on the. end of the threaded vertically-through said tie bar or strap. axle housing H between the wheel J and the, with its upper end in abutting relation to the lowpedestal box G, a tapered cup or outer raceway 45 or end of said wedge. Located in the jaw of the member i2, which is seated in an annularrecess truck pedestal B between the. vertical frame or iii provided therefor in the inner face of said guide shoes D thereon is a box G provided at its wheel concentric to the axle thereof, and a cirinner end with outstanding vertical side flanges I cular series of tapered bearing rollers I4 assem=- so that are disposed opposite the inner side flanges bled in a suitable retaining cage 15 and interof said shoes in positionto receive the side thrust posed between said cup and said cone. The anof the truck. The pedestal or drive box G is nular space between the cone II and the cup I2 is mounted on the adjacent end of a tubular load closed by means of an annular plate It, which supporting housing H, preferably of cast metal, surrounds the large end of said cone and is rethat surrounds but is spaced from a live axle I movably secured at its'outer margin to the inner face of the wheel by a circular series of cap screws IT. The cup l2 extends beyond the recess l3 pro vided therefor in the wheel; and the end closure plate I6 bears against the projecting end of said cup to hold it against axial movement in said re cess. The joint between the end closure plate and the bearing cone is sealed by a device l8 of the piston ring type which seats in an annular groove provided therefor in the large end of said cone.

The axle housing H is provided adjacent to and inwardly of the inner end of the pedestal box F with an exterior thrust rib i9 and an annular spacer element or ring is mounted on said housing between and in abutting relation to said rib and said pedestal box. The sides of the thrust rib or shoulder are radiused so as to thicken the rib at the base thereof and thereby increase the strength of said rib or shoulder in resisting end thrust. Mounted on the axle housing between the opposing ends of the pedest box G and the bearing cone I l is a split ring 2| f hardened steel for correctly positioning said 0 me axi ally of the bearing cup I2. By using rings of different thicknesses, the bearing cone may be positioned endwise ofthe axle housing to obtain a proper adjustment of the taper roller bearing.

As shown in the drawings, an'annular space 22 isprovided between the axle I and the housing H therefor which communicates at the end of said housing with the bearing receiving recess IS in the wheel J, forming a reservoir for lubricant for the roller bearing. Such lubricant is supplied to the reservoir through one or more passageways 23 that extend through said wheel from the outer face thereof to the bearing recess in the inner face thereof and is closed at its outer end by a threaded plug 24. This passageway is disposed in line with the wheel opposing end of the hearing cone I I for the purpose hereinafter described.

The wheel is also provided with a crank pin hole 25 that extends therethrough from side to side thereof adjacent to the periphery of the cup receiving recess i3 therein and is counterbored to form an annular shoulder 26 therein that faces the outer face of said wheel; and the crank pin 21 has a reduced inner end portion that forms a shoulder 28 adapted to abut against the shoulder in said opening and limit the distance that said .pin extends into said opening. The reduced shoulder forming end of the crank pin hole also permits the hole to clear the bearing receiving recess. In the process of assembling the wheel, axle and crank pin, the wheel, with its cup seat and crank pin hole in, rough bored condition, is pressed on the axle end, a tire is shrunk on the wheel, the crank pin hole is finished bored to suit accurate quartering, the crank pin is pressed into said hole, and the cup receiving redess is then finished bored concentric to the axle'axis to correct any eccentricity due to distortion of said re- ""cess resulting from the press-fitting of the wheel ,on said axle and the crank pin in said hole.

In the arrangement described, the vertical load is transmitted to the wheel through the axle housing and the bearing thereon, thereby relieving the axle of such load. Theiaxleis also relieved of the side thrustpf the truck, such thrust being transmitted to the pedestal box whose thrust-flange l faces the direction thrust, thence through the spaceror thrust ring 20 on the axle housing to the thrust rib or shoulder l9 thereof, thence endwise -of the axle housing through the thrust rib, I

spacer ring, drive box, and adjusting ring 2| on the other end of saidaxle, housingto the bearing thereon and thence through said bearing to the adjacent wheel and through the flange thereof to the rail.

The adjusting ring and the spacer ring serve to prevent relative endwise movement of the axle housing and the pedestal box. By using adjusting rings of different thicknesses, the bearing cone may be positioned endwise of the axle housing to obtain proper adjustment of the bearing. Thein the inner face of said wheel. The finishing 'pboring of said recess after pressing the wheel on the axle and the crank pin in the wheel corrects any distortion of said recess caused by such pressfitting operations.

When it is desired to inspect the bearing. the drive box is dropped from the frame, the wedges removed from said box, the box removed from the axle housing, and the end closure plate removed from the wheel, thereby permitting a partial inspection of the bearing. A more thorough inspection of the bearing can be made by inserting rods through the oil filler passageways 23 in the wheel and driving the cone and roller assembly inwardly along the axle housingclear of the inner face of the wheel.

Obviously, numerous changes may be made without departing from the invention. Therefore, I do not wish to be limited to the precise construction shown.

What I claim is:

1. A truck axle construction comprising an axle, a wheel thereon, an antifriction bearing supported by said wheel, said bearing'including an inner raceway member, a housing for said axle having one end fitting in and supported by said inner raceway member, said housing provided with an external thrust shoulder, a pedestal box surrounding said housing between said inner raceway member and said thrust shoulder, and an adjusting ring mounted on said housing between said inner raceway member and said pedestal box, said housing being of substantially uniform diameter between said end thereof and said exterior shoulder.

2. A truck axle construction comprising an axle, a wheel thereon, an anti-friction bearing supported by said wheel, said bearing including an inner raceway member, a housing for said axle having one end fitting in and supported by said inner raceway member, said housing being provided with an external thrust .rib, a pedestal box surrounding said housing between said inner raceway member and said thrust rib, an adjusting ring mounted on said housing between said inner raceway member and said ring, and a spacer ring mounted on said housing between said pedestal box and said thrust rib, said housing be ing of substantially uniform diameter between said end thereof and said exterior shoulder.

3. A truck axle construction comprising an axle, a wheel thereon, said wheel having a circular recess formed in the inner face thereof concentric to the axle axis, an antifriction bearin supported in said recess',-a housing for said axle haying one endasupported in said antifriction bearing, said wheel having a hole extendin therethrough adjacent to the periphery of said recess, said hole being shouldered toform a relatively small portion located adjacent to but spaced outwardly from the periphery of said recess and a relatively large portion extending within the projected periphery of said recess but spaced from the bottom of saidrecess, and a adjacent to the periphery of the recess therein,

and a crank pin fitting in said hole and provided with a reduced end portion forming a shoulder adapted to abut against the shouldered portion of said hole, said recess extending between the shouldered portion of said hole and the inner face of said wheel.

5. The process of assembling the axle, wheel and crank pin of a locomotive driving axle which consists in rough boring a bearing receiving recess in the inner face of the wheel, boring a crank pin hole in said wheel clear of said recess, pressfitting the wheel on the axle, press-fitting the crank pin in said hole and then finish boring said recess concentric to the axle axis to correct any distortion of said recess due to pressing the wheel on the axle and the crank pin in the wheel.

6. The process of assembling the axle, wheel and crank pin of a locomotive driving axle which consists in rough boring a bearing receiving recess in the inner face of the wheel, rough boring a crank pinhole in said wheel adjacent to but clear of said recess, press-fitting the wheel on the axle, finish boring said hole to suit accurate quartering thereof, press-fitting the crank pin in said opening andthe'n finish boring said recess concentric to the axle axis to correct any distortion of said recess due to pressing the wheel on the axle and the crank pin in the wheel.

' 7. A truck axle construction comprising an axle, a wheel thereon, an antifriction bearing supported by said wheel, said bearing including an inner raceway member, a housing for said axle having one end directly supported in said inner raceway member, said housing having a relatively low radiused thrust shoulder thereon inwardly of said inner raceway member, 'said housing being of substantially uniform diameter between said end thereof and said thrust shoulder, a pedestal box surrounding said housing between said inner raceway member and said thrust shoulder, and a spacer ring sleeved on said'axle housing between the thrust shoulder thereon and said pedestal box, said spacer ring having a radiused end fitting the adjacent radiused side of said thrust shoulder and a flat end adapted to bear flatwise against the adjacent end of said pedestal box.

CLIFFORD L. EASTBURG. 

